A42
A42: Actinomycosis
Non-billable headerICD-10-CM
A42 is a non-billable header ICD-10-CM code for actinomycosis. It cannot be billed on its own: choose one of the more specific child codes below.
Excludes1: never code together
These conditions cannot occur together. Billing both on the same encounter is a denial.
- actinomycetoma (B47.1)
Other codes that can never be billed with A42
Their own Excludes1 notes name this code, so the conflict is not listed above.
- J17Pneumonia in diseases classified elsewhere
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Code history
Unchanged in every release from FY2024 to FY2027.
Code to one of these instead A42
6 child codes. Green means billable.